Multi-type temperature sensor time constant test system

Abstract

The utility model discloses a system for testing time constants of multiple types of temperature sensors. The system comprises a computer; the multi-channel data acquisition card is electrically connected with the computer through a data transmission line; the input end of the signal conditioning module is connected with a plurality of different types of temperature sensors, and the output end of the signal conditioning module is connected with the input end of the multi-channel data acquisition card; the double-chamber constant-temperature water tank is electrically connected with the computer through a control communication line and comprises a low-temperature water tank and a high-temperature water tank; and the temperature sensor transfer device is electrically connected with the computer through a control communication line and is used for transferring a plurality of different types of temperature sensors from the low-temperature water tank to the high-temperature water tank. By using the test system, the time constant test can be performed on a plurality of different types of temperature sensors at the same time, and the time constant comparison requirements of the plurality of types of temperature sensors can be met.

Description

Technical Field

[0001] This application relates to the field of metrology and calibration technology for the dynamic response of temperature sensors, and in particular to a time constant testing system for multiple types of temperature sensors. Background Technology

[0002] Temperature sensors, as core components in temperature measurement, have wide applications in industrial production, transportation, and healthcare. The time constant of a temperature sensor is a crucial parameter for evaluating its dynamic performance, reflecting its response speed to temperature changes. Testing the time constant of a temperature sensor can provide data support for sensor design and optimization.

[0003] The time constant of temperature sensors is primarily tested using the step response method, which involves changing the ambient temperature and observing the changes in the sensor's output. In actual testing, because temperature sensors operate on different principles and have different signal output types, a time constant testing system often needs to be developed specifically for each type of temperature sensor. Furthermore, in practical testing, it is often necessary to compare the time constants of different temperature sensors; however, different times and temperature fields can affect the accuracy of these comparisons.

[0004] In summary, existing temperature sensor time constant testing systems suffer from problems such as limited test object types and a small number of simultaneous test objects. Utility Model Content

[0005] In view of this, the present application provides a time constant testing system for multiple types of temperature sensors to solve the technical problems existing in the related art. It can simultaneously test the time constant of multiple different types of temperature sensors and meet the time constant comparison requirements of multiple types of temperature sensors.

[0006] According to an embodiment of this application, a time constant testing system for multiple types of temperature sensors is provided, comprising:

[0007] computer;

[0008] A multi-channel data acquisition card is electrically connected to the computer via a data transmission cable;

[0009] The signal conditioning module has its input connected to multiple temperature sensors of different types, and its output connected to the input of the multi-channel data acquisition card.

[0010] A dual-chamber constant temperature water bath, electrically connected to the computer via a control communication line, includes a low-temperature water bath and a high-temperature water bath;

[0011] A temperature sensor transfer device, electrically connected to the computer via a control communication line, is used to transfer multiple different types of temperature sensors from the low-temperature water tank to the high-temperature water tank.

[0012] Optionally, the signal conditioning module includes a voltage conditioning unit, a current conditioning unit, and a resistance conditioning unit, which are electrically connected to the corresponding type of temperature sensor.

[0013] Optionally, the dual-chamber constant temperature water bath further includes a water bath controller, a water pump, and a heater. The heater and the water pump are arranged in the high-temperature water bath. The water bath controller controls the heater and the water pump respectively. The heater is used to adjust the water temperature in the high-temperature water bath, and the water pump is used to adjust the water flow rate in the high-temperature water bath. The water bath controller is electrically connected to the computer.

[0014] Optionally, the temperature sensor transfer device includes an action controller, a clamping mechanism, a horizontal moving mechanism, and a vertical lifting mechanism. The horizontal moving mechanism is mounted on the vertical lifting mechanism, and the clamping mechanism is mounted on the horizontal moving mechanism. The action controller controls the clamping mechanism, the horizontal moving mechanism, and the vertical lifting mechanism respectively, and the action controller is electrically connected to the computer.

[0015] Optionally, the clamping mechanism includes several grippers for clamping different types of temperature sensors, enabling fast and stable clamping and releasing of temperature sensors to coordinate with the vertical lifting mechanism and the horizontal moving mechanism.

[0016] Optionally, the gripper is a two-finger pneumatic gripper.

[0017] Optionally, both the horizontal moving mechanism and the vertical lifting mechanism are linear motion mechanisms.

[0018] The technical solutions provided by the embodiments of this application may include the following beneficial effects:

[0019] As can be seen from the above embodiments, the input terminal of the signal conditioning module of this application is connected to multiple temperature sensors of different types, meeting the testing requirements of different types of temperature sensors and realizing the universality of the testing system. By cooperating the signal conditioning unit and the multi-channel data acquisition card for data acquisition, simultaneous testing of multiple temperature sensors of the same or different types is realized. The realization of simultaneous testing can promote the dynamic performance comparison and screening of temperature sensors, providing data support for the improvement of temperature sensor performance.

[0020] This invention automates the testing process through computer control, which not only reduces labor costs and improves testing efficiency, but also ensures the consistency and accuracy of the tests.

[0021] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0022] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0023] Figure 1 This is a schematic diagram of a time constant testing system for multiple types of temperature sensors provided in an embodiment of this utility model.

[0024] Figure 2 This is a schematic diagram of a signal conditioning module provided in an embodiment of the present invention.

[0025] Figure 3 This is a schematic diagram of a temperature sensor transfer device provided in an embodiment of the present invention.

[0026] Figure 4 This is a structural diagram of the temperature sensor transfer device provided in an embodiment of the present invention.

[0027] Figure 5 This is a schematic diagram of a dual-chamber constant temperature water bath provided in an embodiment of the present invention.

[0028] In the diagram: 1. Computer; 2. Multi-channel data acquisition card; 3. Signal conditioning module; 31. Voltage conditioning unit; 32. Current conditioning unit; 33. Resistance conditioning unit; 4. Temperature sensor transfer device; 41. Motion controller; 42. Clamping device; 43. Horizontal moving mechanism; 44. Vertical lifting mechanism; 5. Dual-chamber constant temperature water bath; 51. Water bath controller; 52. Water pump; 53. Low temperature water bath; 54. High temperature water bath. Detailed Implementation

[0029] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0030] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The singular forms “a,” “the,” and “the” used in this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0031] like Figure 1 As shown in the figure, this utility model provides a multi-type temperature sensor time constant testing system, including a computer 1, a multi-channel data acquisition card 2, a signal conditioning module 3, a temperature sensor transfer device 4, and a dual-chamber constant temperature water bath 5. The multi-channel data acquisition card 2 is electrically connected to the computer 1 via a data transmission line; the input end of the signal conditioning module 3 is connected to multiple different types of temperature sensors, and its output end is connected to the input end of the multi-channel data acquisition card 2; the dual-chamber constant temperature water bath 5 is electrically connected to the computer 1 via a control communication line, and includes a low-temperature water bath and a high-temperature water bath; the temperature sensor transfer device 4 is electrically connected to the computer 1 via a control communication line, and is used to transfer multiple different types of temperature sensors from the low-temperature water bath to the high-temperature water bath.

[0032] like Figure 2 As shown, the signal conditioning module 3 includes a voltage conditioning unit 31, a current conditioning unit 32, and a resistance conditioning unit 33. The input terminals of the voltage conditioning unit 31, current conditioning unit 32, and resistance conditioning unit 33 are connected to the output terminals of the corresponding types of temperature sensors. Specifically, the output of the voltage-type temperature sensor is connected to the voltage conditioning unit 31, the output of the current-type temperature sensor is connected to the current conditioning unit 32, and the output of the resistance-type temperature sensor is connected to the resistance conditioning unit 33. The number and type of the voltage conditioning unit 31, current conditioning unit 32, and resistance conditioning unit 33 can be increased or decreased according to the number and type of the connected temperature sensors. Their output terminals are connected to the multi-channel data acquisition card 2.

[0033] Specifically, the voltage conditioning unit 31 can be an ADI AD620, LMV358A, or NSA2860, but is not limited to these. The current conditioning unit 32 can be a WJ34, CZ11, or DFROBOT SEN0262, but is not limited to these. The resistance conditioning unit 33 can be an ADAM-3013, SCM5B36, or ISO EM RPO, but is not limited to these.

[0034] like Figure 3As shown, the temperature sensor transfer device 4 includes an action controller 41, a clamping mechanism 42, a horizontal moving mechanism 43, and a vertical lifting mechanism 44. The horizontal moving mechanism 43 is mounted on the vertical lifting mechanism 44, and the clamping mechanism 42 is mounted on the horizontal moving mechanism 43. The action controller 41 controls the clamping mechanism 42, the horizontal moving mechanism 43, and the vertical lifting mechanism 44 respectively. The action controller 41 is electrically connected to the computer 1. The clamping mechanism 42 can clamp one or multiple temperature sensors simultaneously. The clamped temperature sensor can move horizontally with the horizontal moving mechanism 42; the clamped temperature sensor can move vertically with the vertical lifting mechanism 43. The computer 1 is connected to the temperature sensor transfer device 4 via a control communication line, mainly the action controller 41 is connected to the computer 1. The action controller 41 receives instructions from the computer 1, thereby controlling the clamping mechanism 42, the horizontal moving mechanism 43, and the vertical lifting mechanism 44 to perform actions.

[0035] Specifically, the motion controller 41 may be a Yaskawa Σ-7 series general-purpose servo driver, CKD KCA series stepper motor controller or TMC4361A servo controller, but is not limited to these.

[0036] In one embodiment, the clamping mechanism 42 includes a plurality of grippers for clamping different types of temperature sensors. For example... Figure 4 As shown, three grippers are provided, which are used to hold voltage-type temperature sensors, current-type temperature sensors and resistance-type temperature sensors, respectively.

[0037] Specifically, the gripper can be a two-finger pneumatic gripper. Without loss of generality, it can be equipped with an air pump, and a pneumatic valve can be installed on the air pipe connecting the air pump and the two-finger pneumatic gripper to control the gripping and releasing actions of the two-finger pneumatic gripper. Of course, an electric two-finger gripper can also be used.

[0038] The gripper enables rapid and stable clamping and releasing of the temperature sensor, coordinating with the horizontal moving mechanism 43 and the vertical lifting mechanism 44. Both the horizontal moving mechanism 43 and the vertical lifting mechanism 44 can be linear motion mechanisms, such as linear motors or lead screw and slider structures, which can move in a straight line. A lead screw and slider structure is preferred.

[0039] like Figure 5As shown, the dual-chamber constant-temperature water bath 5 includes a water bath controller 51, a water pump 52, a heater 53, a low-temperature water bath 54, and a high-temperature water bath 55. The water pump 52 is used to regulate the water flow in the high-temperature water bath 55, and the heater 53 is used to regulate the water temperature in the high-temperature water bath 55. The computer 1 is connected to the dual-chamber constant-temperature water bath 5 via a control communication line, primarily meaning that the water bath controller 51 is connected to the computer 1. The water bath controller 51 receives instructions from the computer 1, thereby controlling the operation of the water pump 52 and the heater 53.

[0040] The testing process of a multi-type temperature sensor time constant testing system provided in this embodiment of the invention is as follows:

[0041] First, the test parameters are set in computer 1. The test parameters are set according to the test requirements of the temperature sensor, including parameters such as test temperature difference and flow rate.

[0042] Next, the motion controller 41 receives the control command from the computer 1 and controls the clamping mechanism 42 to clamp the temperature sensor to be tested. The water tank controller 51 receives the control command from the computer 1 and uses the heater 53 to heat the high-temperature water tank 55.

[0043] Next, after clamping mechanism 42 completes the clamping operation on the temperature sensor, the temperature sensor under test is placed into the low-temperature water bath 54 via horizontal moving mechanism 43 and vertical lifting mechanism 44. Computer 1 reads the data from the temperature sensor through multi-channel data acquisition card 2. Waiting for the temperature of the high-temperature water bath 55 to reach the test setting requirements, temperature sensor transfer device 4 then uses horizontal moving mechanism 43 and vertical lifting mechanism 44 to place the temperature sensor under test into the high-temperature water bath 55 again. Waiting for the output of the temperature sensor to stabilize or for the test to reach the set time, computer 1 stops multi-channel data acquisition card 2 from reading the temperature sensor data. Temperature sensor transfer device 4 performs a reset operation, returning to its original position.

[0044] Finally, computer 1 analyzes and processes the collected temperature sensor data to obtain the temperature sensor time constant.

[0045] After completing one round of testing, the user can choose whether to continue testing. The user can also choose whether to replace the temperature sensor being tested. If the user chooses to replace the temperature sensor, the tested sensor must be removed before starting a new testing procedure. If the user chooses to continue testing the current sensor, they only need to modify the parameters to begin the testing process.

[0046] This invention enables the testing of time constants for voltage-type, current-type, and resistance-type temperature sensors. Using this testing system, multiple temperature sensors of the same or different types can be tested simultaneously, satisfying both the time constant testing requirements for single temperature sensors and the time constant comparison requirements for multiple types of temperature sensors. While maintaining testing accuracy, it also saves on testing costs.

[0047] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the claims.

[0048] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A time constant testing system for multiple types of temperature sensors, characterized in that, include: computer; A multi-channel data acquisition card is electrically connected to the computer via a data transmission cable; The signal conditioning module has its input connected to multiple temperature sensors of different types, and its output connected to the input of the multi-channel data acquisition card. A dual-chamber constant temperature water bath, electrically connected to the computer via a control communication line, includes a low-temperature water bath and a high-temperature water bath; A temperature sensor transfer device, electrically connected to the computer via a control communication line, is used to transfer multiple different types of temperature sensors from the low-temperature water tank to the high-temperature water tank.

2. The time constant testing system for multiple types of temperature sensors according to claim 1, characterized in that, The signal conditioning module includes a voltage conditioning unit, a current conditioning unit, and a resistance conditioning unit, which are electrically connected to the corresponding type of temperature sensor.

3. The time constant testing system for multiple types of temperature sensors according to claim 1, characterized in that, The dual-chamber constant temperature water bath also includes a water bath controller, a water pump, and a heater. The heater and the water pump are arranged in the high-temperature water bath. The water bath controller controls the heater and the water pump respectively. The heater is used to adjust the water temperature in the high-temperature water bath, and the water pump is used to adjust the water flow rate in the high-temperature water bath. The water bath controller is electrically connected to the computer.

4. The time constant testing system for multiple types of temperature sensors according to claim 1, characterized in that, The temperature sensor transfer device includes an action controller, a clamping mechanism, a horizontal moving mechanism, and a vertical lifting mechanism. The horizontal moving mechanism is mounted on the vertical lifting mechanism, and the clamping mechanism is mounted on the horizontal moving mechanism. The action controller controls the clamping mechanism, the horizontal moving mechanism, and the vertical lifting mechanism respectively, and the action controller is electrically connected to the computer.

5. The time constant testing system for multiple types of temperature sensors according to claim 4, characterized in that, The clamping mechanism includes several grippers for clamping different types of temperature sensors.

6. The time constant testing system for multiple types of temperature sensors according to claim 5, characterized in that, The gripper is a two-finger pneumatic gripper.

7. The time constant testing system for multiple types of temperature sensors according to claim 4, characterized in that, Both the horizontal moving mechanism and the vertical lifting mechanism adopt linear motion mechanisms.

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